Intervalve [india] ltd manufactures sleeve lined butterfly & check valves, based on dutch technology. Intervalve exports to countries like uk, usa, germany, south east asia and middle east. Intervalve [india] is an iso 9001 certified company and has also obtained ce marking as per the pressure equipment directive. Intervalve [india] also manufactures butterfly valves qualified as per api 607 for fire safe applications. Intervalve butterfly valve model ivge / ivtle is a corrosion resistant valve for chemical process industries. The valve`s unique design eliminates media contact with any metallic surface of the valve. The valve has a fully rubber lined body and a rubber encapsulated disc with a square slot for the drive end shaft. The ivge butterfly valves handlever possess the following unique features:
1. full pn 10 pressure rating for the entire range of 50 nb to 350 nb.
2. bi-directional valve with sealing capability to hold rated shut off pressure in either direction
3. triple sealing system for shaft sealing to eliminate fugitive emission or secondary leakage.
4. self lubricating shaft bearings [ptfe coated stainless steel] for both drive end and non-drive end shaft for minimum bearing friction torque.
5. square coupling disc drive arrangement
6. spherically profiled seat and disc shoulder contact area
7. external locking arrangement for top shaft to make it blow out proof.
8. adaptability for actuated operation through standardised top flange dimensions for actuator mounting.
9. seat liner extending on to the flange contact faces of the body eliminates the need for separate flange gaskets.
10. controlled compression of the gasket sealing face to offer optimum sealing and prevent gasket face crushing due to over tightening.
11. choice of seat and encapsulation material to meet a host of aggressive chemicals.
